Of course, you have to now how to read Southwest-speak these days. Lately, "Southwest serivce to... begins..." these days usually simply means that that's the date when AirTran-branded flights to those cities get replaced with Southwest-branded flights. (AirTran and Southwest being in a long gradual process of implementing a merger, there tend to be lots of such announcements which to those not familiar with the merger particulars could be misunderstood as totally new service.)